Mitsubishi Electric PUZ-M200YKA, Service Manual

Page: 15 / 110

15
OCH737
5-4. NOISE CRITERION CURVES
1.5 m
1 m
MICROPHONE
UNIT
GROUND
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCT
AVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUZ-M200YKA.UK
COOLING
MODE
HEATING
58
SPL(dB)
60
LINE
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCT
AVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUZ-M250YKA.UK
COOLING
MODE
HEATING
59
SPL(dB)
62
LINE